well said:
I do not even know what the caddy is?
I think they're referring to an adapter or carrier, where you mount the
HDD in the carrier and install the carrier in the laptop. Have you
tried going through the motions of removing the existing HDD? If the
HDD slides out in a carrier, take a close look at the HDD itself. It's
probably a standard 2.5" HDD that is screwed into the carrier. A
standard 2.5" laptop HDD is about 70mm by 100mm and 9.5mm thick. You
probably just need to buy a new HDD, screw it into the old carrier, and
reinsert back into the laptop.
If you're trying to save data from the old HDD, that's going to be more
involved. Perhaps someone thought you needed to have both HDDs
installed at the same time (if your laptop even supports that). In that
case, you would need whatever adapter/caddy/carrier is necessary to also
install the second HDD while the first HDD is using the original
carrier. For a one-time use, that's probably going to be more expensive
than you want. There are cheaper alternatives, such as a small
2.5-to-3.5 adapter (~$5 from
www.dalco.com) that allows you to connect a
2.5" laptop HDD to a standard desktop IDE cable. Then you can connect
your old HDD to the desktop, transfer files to the desktop, swap the
laptop HDDs and transfer the files back from the desktop. Or if you
have a network, things may be even easier.